AMETEK XHR 1000 Watt Series - Manual (Page 37)

Installation
Functional Tests
37
Functional Tests
The functional test procedures include power-on and front panel function checks as
well as voltage and current mode operation checks.
Equipment
Required
• Digital voltmeter (DVM) rated better than 0.5% accuracy.
• DC shunt 1 mV/A (±0.25%) with connecting wire. The recommended current
ratings for the DC shunt and the wire must be at least 10% more than the output
current of the power supply.
Power-on
Check
1. Ensure that the AC power switch is in the OFF position.
2. Ensure that the output sense lines are connected in the default configuration. On
low voltage models, local sense jumpers connect terminal J2-2 on the J2
connector to the positive bus bar, and terminal J2-1 to the negative bus bar. On
high-voltage models, terminal J2-2 connects to positive sense (+SNS) and
terminal J2-1 to return sense (–SNS) on the wire clamp connector.
3. Turn the voltage and current controls fully counter-clockwise.
4. Connect the unit to an AC outlet.
5. Turn the front panel power switch to ON.
After a short, power-on delay, the front panel digital meters light up. Both voltmeter
and ammeter displays read zero.
Voltage Mode
Operation
Check
1. Ensure that both the voltage and current controls on the front panel are turned
fully counter-clockwise.
2. Connect the DVM to the output terminals on the rear panel, observing correct
polarity.
3. Turn the current control 1/2-turn clockwise.
4. Slowly turn the voltage control clockwise and observe both the front panel
voltmeter and the DVM. The voltage mode LED will turn on.
5. Compare the DVM reading with the front panel voltmeter reading to verify the
accuracy of the internal voltmeter. The minimum control range is from zero to
the maximum rated output for the particular power supply model.
6. Turn the front panel power switch to OFF.